#!/usr/bin/env python
# -*-coding:utf-8-*-
# File    : liyuqi.py
# Date    : 2021-02-05
# Author  : Tom.Lee

class Human:
    def speak(self):
        pass

    def walk(self):
        pass


class Chiness(Human):
    def speak(self, sth):
        print("我是中国人。我爱{}".format(sth))

    def walk(self, step):
        print("今日步行{}步。".format(step))


if __name__ == '__main__':
    liyuqi = Chiness()
    liyuqi.speak("中国")
    liyuqi.walk(10000)